I cannot find much if anything about these trains. I have a set of six, but it may be two sets combined. They are about 7 inches long, and not far off of HO gauge. The say "All American" on the side; eye hook connectors to each other, and are wood with metal wheels. I have two engines, two sort of coal cars, a caboose and a refrigerator car. The logo seems very similar to the Army Airborne logo.